An item impregnated with a standardized quantity of a chemical agent(s) for the differentiation of certain groups of microorganisms (presumptive differentiation). For discs used for sensitivity testing, see sensitivity discs, diagnostic.
Classification: Diagnostic or lab reagents on a backing, prepared diag/lab reagents whether or not on a backing, not of heading 3002 or 3006; certified ref materials
NSN 5935-00-235-0106
NSN 5960-00-826-7697
NSN 5920-00-073-5507
NSN 5855-01-060-2820
NSN 6110-01-488-9153
NSN 5925-01-032-3461
NSN 5930-01-424-8331
NSN 6130-00-340-9279
NSN 6685-01-562-4689
NSN 5935-00-983-7287
NSN 6645-01-036-1182
NSN 5905-01-572-6361